pull-requests most welcome: please share your improvements.

A quick ruby+redis script to monitor DSL disconnections using time series with redis zadd/zrangebyscore.

Tested on Mac OS X with the stock Ruby 1.8.7 Snow Leopard install.

• make sure you have redis up: brew install redis (I set it up to start at boot, too)
• install the required gems for your system ruby (rvm system if you use rvm)
  • gem install redis
• set up a cron with crontab -e

* * * * * cd /Users/thbar/git/uptime && ruby check_dsl.rb >> check_dsl.log 2>&1

• plug a graphical front-end

Based on redis timeseries work by Paul Bellamy and antirez.

MIT